............You are using a short of supply situation to make a profit off somebody else.

Just like all the people who were selling the $300 "Tickle Me Elmo" dolls on Ebay a couple years ago. Ohhhhh the humanity. Somebody trying to make a buck on a supply shortage - who would have thought????

If I can flip my M for a small profit a week after I buy it, am I taking advantage of a supply shortage? Sure. It's a slippery slope.